Finding the Fourth Proportional to 221,491.76, 305,658.76 and 136,658.02
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Solution
The fourth proportional to 221,491.76, 305,658.76 and 136,658.02 is: 188,588.15
Step by Step Solution
- Step 1: Write the proportion equation
221,491.76 : 305,658.76 = 136,658.02 : x - Step 2: Convert to fraction form
221,491.76/305,658.76 = 136,658.02/x - Step 3: Cross multiply
221,491.76x = 305,658.76 × 136,658.02 - Step 4: Simplify right side
221,491.76x = 41,770,720,937.26 - Step 5: Solve for x
x = 41,770,720,937.26/221,491.76 - Step 6: Final answer
x = 188,588.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.